53785 has 8 divisors (see below), whose sum is σ = 66816. Its totient is φ = 41520.

The previous prime is 53783. The next prime is 53791. The reversal of 53785 is 58735.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53785 - 2¹ = 53783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19 + ... + 328.

It is an arithmetic number, because the mean of its divisors is an integer number (8352).

2⁵³⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

53785 is a deficient number, since it is larger than the sum of its proper divisors (13031).

53785 is a wasteful number, since it uses less digits than its factorization.

53785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383.

The product of its digits is 4200, while the sum is 28.

The square root of 53785 is about 231.9159330447. The cubic root of 53785 is about 37.7474012509.

Multiplying 53785 by its sum of digits (28), we get a triangular number (1505980 = T₁₇₃₅).

Subtracting 53785 from its reverse (58735), we obtain a triangular number (4950 = T₉₉).

It can be divided in two parts, 53 and 785, that added together give a palindrome (838).

The spelling of 53785 in words is "fifty-three thousand, seven hundred eighty-five".